arm64: dts: qcom: qcs6490-rb3gen2: Declare GCC clocks protected

arm64: dts: qcom: qcs6490-rb3gen2: Declare GCC clocks protected

The SC7280 GCC binding describes clocks which, due to the difference in
security model, are not accessible on the RB3gen2 - in the same way seen
on QCM6490.

Mark these clocks as protected, to allow the board to boot. In contrast
to the present QCM6490 boards GCC_EDP_CLKREF_EN is left out, as this
does not need to be "protected" and is used on the RB3Gen2 board.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Luca Weiss <luca.weiss@fairphone.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Link: https://lore.kernel.org/r/20240209-qcm6490-gcc-protected-clocks-v2-1-11cd5fc13bd0@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>